Which answer accurately describes the difference between speed and velocity?
a. speed requires distance. velocity requires direction.
b. speed is the result of a change in direction. velocity is the result of a change in acceleration.
c. gravity affects speed. gravity does not affect acceleration.
dspeed measures a change in inertia. inertia remains the same in velocity.

A.Speed requires distance. Velocity requires direction.

Explanation:

The difference between speed and velocity is:

- Speed is a scalar, so it consists only of a magnitude, which is defined as the ratio between the distance covered and the time taken:

So, speed requires distance

- Velocity is a vector, so it requires both a magnitude (which is equal to the speed) and a direction. Therefore, velocity requires a direction.

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